<!--  -->
<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>活动列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <!-- label 指定列名  type="index" 增加索引列-->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <!-- 同时为一列指定 prop 和 作用域插槽，作用域插槽会覆盖 prop 的值 -->
        <!-- <el-table-column label="状态" prop="mg_state"> -->
        <el-table-column label="状态">
          <!-- 插槽 两种方法都可以, scope.row 代表这一行对应的数据 -->
          <!-- <template slot-scope="scope"> -->
          <template v-slot="scope">
            <!-- {{scope.row}} -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template v-slot="scope">
            <!-- 修改按钮 -->
            <el-tooltip effect="dark" content="修改" placement="top" :enterable="false">
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
            <!-- 删除按钮 -->
            <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <!-- layout 展示页面功能组件 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{userinfo.username}}</p>
        <p>当前的角色：{{userinfo.role_name}}</p>
        <p>
          分配新角色：
          <el-select v-model="seletedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;

      if (regEmail.test(value)) {
        // 合法的邮箱
        return callback();
      }

      callback(new Error('请输入合法的邮箱'));
    };

    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;

      if (regMobile.test(value)) {
        // 合法的邮箱
        return callback();
      }

      callback(new Error('请输入合法的手机号'));
    };

    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在 3~10 个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在 6~15 个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象保存
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userinfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选择的角色 id 值
      seletedRoleId: ''
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    getUserList() {
      this.$http.get('users', { params: this.queryInfo }).then(res => {
        const data = res.data;
        if (data.meta.status !== 200) {
          return this.$message.error('data.meta.msg');
        }

        this.userList = data.data.users;

        this.total = data.data.total;
      });
    },

    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },

    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },

    // 监听 switch 开关状态的改变
    userStateChanged(userinfo) {
      // console.log(userinfo);
      this.$http
        .put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        .then(res => {
          const data = res.data;
          if (data.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state;
            return this.$message.error('更新用户状态失败! ');
          }
          this.$message.success('更新用户状态成功! ');
        });
    },

    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },

    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(valid => {
        // console.log(valid);
        if (!valid) return false;
        // 可以发起添加用户的网络请求
        this.$http.post('users', this.addForm).then(res => {
          // console.log(res);

          const data = res.data;
          if (data.meta.status !== 201) {
            return this.$message.error('添加用户失败！');
          }

          this.$message.success('添加用户成功！');

          // 隐藏添加用户的对话框
          this.addDialogVisible = false;

          // 重新获取用户列表数据
          this.getUserList();
        });
      });
    },

    // 展示编辑用户的对话框
    showEditDialog(id) {
      this.editDialogVisible = true;
      this.$http.get('users/' + id).then(res => {
        const data = res.data;
        if (data.meta.status !== 200) {
          return this.$message.error('查询用户失败！');
        }

        this.editForm = data.data;
      });
    },

    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },

    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(valid => {
        // console.log(valid);
        if (!valid) return false;
        // 可以修改添加用户信息的数据请求
        this.$http
          .put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          .then(res => {
            const data = res.data;
            if (data.meta.status !== 200) {
              return this.$message.error('修改用户信息失败！');
            }

            // 关闭对话框
            this.editDialogVisible = false;

            // 刷新数据列表
            this.getUserList();

            // 提示修改成功
            this.$message.success('修改用户信息成功！');
          });
      });
    },

    // 根据Id删除对应的用户数据
    removeUserById(id) {
      // 弹框询问用户是否删除数据
      this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(() => {
          this.$http.delete('users/' + id).then(res => {
            const data = res.data;
            if (data.meta.status !== 200) {
              return this.$message.error('删除用户失败！');
            }
            this.$message({
              type: 'success',
              message: '删除用户成功!'
            });
            this.getUserList();
          });
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });
        });
    },

    // 展示分配角色的对话框
    setRole(userinfo) {
      this.userinfo = userinfo;

      // 在展示对话框之前，获取所有角色的列表
      this.$http.get('roles').then(res => {
        const data = res.data;
        if (data.meta.status !== 200) {
          return this.$message.error('分配权限失败！');
        }

        this.rolesList = data.data;
      });

      this.setRoleDialogVisible = true;
    },

    // 点击按钮，分配角色
    saveRoleInfo() {
      if (!this.seletedRoleId) {
        return this.$message.error('请选择要分配的角色！');
      }

      this.$http
        .put(`users/${this.userinfo.id}/role`, {
          rid: this.seletedRoleId
        })
        .then(res => {
          const data = res.data;
          if (data.meta.status !== 200) {
            return this.$message.error('更新角色失败！');
          }

          this.$message.success('更新角色成功！');
          this.getUserList();
          this.setRoleDialogVisible = false;
        });
    },

    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.seletedRoleId = '';
      this.userinfo = {};
    }
  }
};
</script>

<style lang="less" scoped>
</style>
